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Are HIGH temps causing the DVR issues?

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by schneid, Jun 11, 2008.

  1. Jun 14, 2008 #41 of 145
    Rich

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    That's a valid point. But, the 20/21s stay about the same temp as long as the ambient temp remains the same. The debate here is more focused on whether heat plays a role in the problems, pixillation, audio drop outs, 771s, etc. And the 20/21s are always in some degree of "on". And I think those cooling pads must have a thermostat to control the amount of cooling. But in order to be effective, they, too, must always be on, no? If he shut down his cooling unit at night, he would be dropping into your scenario.

    I bet there's a formula here for determining the inner temp based on the ambient temp in the room or enclosure of the 20/21. My 21-700 is in a room that is usually 60-62 degrees and stays really constant at 77 degrees. That's using an eSATA.

    So, we know these things operate from a low of 77 (I haven't seen a post of any lower than my 21-700) and a high of 137. What is the optimum range? Or optimum mean temp? What temp does the thermal cutoff shut the unit down?

    All those questions are interesting, but I still think heat isn't really a factor in the ongoing problems we've been experiencing. It is an interesting subject tho. I wonder how many people check their infernal temp or even know how.

    Rich
     
  2. Jun 14, 2008 #42 of 145
    houskamp

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    77 degree reading is a failure mode... when it can't get the temp from the interna; drive it displays 77 degrees..
     
  3. Jun 15, 2008 #43 of 145
    kirkus

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    This is interesting. I noticed my freeze-ups/reboots seemed to occur more often on the weekend - and it occurred to me that I had been playing music outside most of the weekend, which required a second receiver to be on creating additional heat in my cabinet. The reboots always resulted in a reboot to the internal drive (old recordings, "update software", etc, as if the external drive was not hooked up.) The DVR did not seem to be hot, but like John, the Seagate was DAMN hot.

    Moved it to a higher shelf where it is isolated, and have only had one lock-up in three weeks (versus about three per week). If I have another lockup, I'll add a fan to the cabinet. I'm starting to suspect that my lock-ups are related to a heat issue of the esata rather than the DVR.
     
  4. Jun 15, 2008 #44 of 145
    schneid

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    As the OP, I am still problem free after trashing the Cavalry board and case and hooking the drive via eSATA to SATA cable and powering via an old PC power supply. I have never had problems with my HR20-100 running on the internal drive but I added auxiliary cooling from the get-go. Only when I added the Cavalry, that ran noticeably hot, did I have problems.

    For me, Cavalry's are junk. I think the quality control is poor and their service after the sale is worse. I would have thought after two bad drives they would have guaranteed the third one was solid. Instead I got a box of junk. The drive itself seems okay so I only wasted about $70 buying a Cavalry so far. It will now cost $50 or so to get it into an Antec MX-1 case that seems to be best solution here. Prices for them have gone way up.
     
  5. Jun 15, 2008 #45 of 145
    Rich

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    Both 21-700s I have had in this very cool room have read the same infernal temp. How could two consecutive units have the same problem? Not doubting your info, just would like more info.

    Rich
     
  6. Jun 15, 2008 #46 of 145
    Rich

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    What model was the bad Cavalry?

    Rich
     
  7. Jun 15, 2008 #47 of 145
    Rich

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    Something else happens in this cool room. My Panny plasma will not respond to my 21's mote or it's own mote when I try to turn the set on. Once on, all the functions work on both motes. And after it's been on a little while, both motes will turn it on and off.

    Been meaning to call Panasonic to see if this is normal in very cool room (usually around 58-62 degrees. Right now it is 61 degrees in here and I am getting ready to turn a heater on.

    All my experience with computer rooms tells me that cooler is better, but between the 21 and the Panny I have begun to wonder.

    Rich
     
  8. Jun 15, 2008 #48 of 145
    Ken S

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    You might also consider that the extra drain that some of these USB fans put on the HR2x power supplies may cause more harm than the extra cooling provides.
     
  9. Jun 15, 2008 #49 of 145
    Ken S

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    Are you using mediashare to play the music? That's as likely a cause of the lockups as heat.
     
  10. Jun 15, 2008 #50 of 145
    schneid

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    CAXM3701T0
     
  11. Jun 15, 2008 #51 of 145
    MikeekiM

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    So your opinion is that the Cavalry internal bare drive is fine, but the external case is junk?
     
  12. Jun 15, 2008 #52 of 145
    schneid

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    Yep, I think that sums it up. For grins I just pealed off the new serial number sticker sloppily pasted over the original one. It states, "CAXM37750, 750GB USB 2.0/SATA", so I think it is pretty clear they sent me an old case they had laying around.

    Now I have to go make sure I really have a 1TB drive.

    Update: The drive is a 1TB WD Green 10EACS. From what I have read these are good drives.
     
  13. Jun 16, 2008 #53 of 145
    kirkus

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    Nope. Music unrelated to HR20 operation. Only connection is common cabinet (and heat buildup).
     
  14. Jun 16, 2008 #54 of 145
    Rich

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    Mine is a CAXM37750. Works perfectly. Runs without much heat.

    Rich
     
  15. Jun 16, 2008 #55 of 145
    EricRobins

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    I've got 2 HR20-100's stacked one on the other, with a DVD/VCR combo unit on top of the second HR20.

    Also in the same enclosed cabinet I have a Marantz AV rcvr.

    When all this was first put in, I had two fans pulling the air out of the cabinet into the wall space.

    On Sat morning, I was screwing around w/ a new HDMI cable (long, OT story), and in the afternoon the lower HR20 started locking up (http://www.dbstalk.com/showthread.php?t=130968). I had inadvertently unplugged the two cooling fans.

    When I finally got the HR20 running again, the temp read 124. Now everything is fine. You would have a very hard time convincing me that these errors were not the result of high temperatures.
     
  16. Jun 16, 2008 #56 of 145
    Rich

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    What was the internal (infernal) temp when the 20 locked up? Did you get a chance to check it?

    Rich
     
  17. Jun 16, 2008 #57 of 145
    Lee L

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    It sure seems likely that YOUR issues were caused by the high temps. However, that certainly does not mean that all HR2x errors are caused by high temps or that as the original poster stated the first line of of his post that
    When your boxes had high temps, did you get lots of grey or black recordings?
     
  18. Jun 16, 2008 #58 of 145
    schneid

    schneid Godfather

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    My third replacement 1TB came in a CAXM37750 (750GB) labeled case. Maybe this case can't handle the 1TB drives. I am still trouble free after ditching the Cavalry case ten days ago. I haven't missed/lost a single recording, can record two at once, and download DOD while recording off the sat.

    I have ordered an Antec MX-1 case as my bare drive setup is ugly and vulnerable. That will put me over $300 for my Cavalry debacle.

    Other than being ripped off by Cavalry, I am a happy D* subscriber.
     
  19. Jun 16, 2008 #59 of 145
    MikeekiM

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    $300, huh? Wow... How does that cost break-down?
     
  20. Jun 16, 2008 #60 of 145
    Rich

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    Good point. Let's not use this situation (which was caused by "driver error") to conclude that all issues are caused by "high" temps when we don't even know what a "high" temp is.

    I'd really like to know what temps he was getting without the fan/s.

    And I wish the Puddy Tat would reply to my questions about the 77 degree temps I'm getting on the 21s.

    Rich
     

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